dsPIC33/PIC24 Family Reference Manual
DS70005340A-page 104 2018 Microchip Technology Inc.
12.0 INTERRUPTS
Interrupts can be classified into multiple layers. Lower layer interrupts propagate to higher
layers by multiplexing them into single interrupts. Figure 12-1 illustrates the layers of interrupts.
• FIFO Individual Interrupts
• FIFO Combined Interrupts
• Main Interrupts
These interrupts are then funneled into three separate module interrupts:
• Receive Interrupt
• Transmit Interrupt
• Information Interrupt
All module interrupts are persistent, meaning the condition that caused the interrupt must be
cleared within the module for the interrupt request to be removed.
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